123112020100031 has 8 divisors (see below), whose sum is σ = 123306435060144. Its totient is φ = 122917728231360.

The previous prime is 123112020099989. The next prime is 123112020100037. The reversal of 123112020100031 is 130001020211321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123112020100031 - 2⁶ = 123112020099967 is a prime.

It is a super-2 number, since 2×123112020100031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123112020099982 and 123112020100009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123112020100037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28770845 + ... + 32771718.

It is an arithmetic number, because the mean of its divisors is an integer number (15413304382518).

Almost surely, 2^{123112020100031} is an apocalyptic number.

123112020100031 is a deficient number, since it is larger than the sum of its proper divisors (194414960113).

123112020100031 is an equidigital number, since it uses as much as digits as its factorization.

123112020100031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61545721.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 123112020100031 its reverse (130001020211321), we get a palindrome (253113040311352).

The spelling of 123112020100031 in words is "one hundred twenty-three trillion, one hundred twelve billion, twenty million, one hundred thousand, thirty-one".